Chromatin structure and methylation of rat rRNA genes studied by formaldehyde fixation and psoralen cross-linking
Nucleic Acids Research (1997) - Comments
pubmed: 9108154  issn: 0305-1048  doi: 10.1093/nar/25.9.1727  issn: 1362-4962 

I. Stancheva, R. Lucchini, T. Koller, J. M. Sogo